This whole website is geared toward people who want to build their own "byrdo-style" joystick, not overpay for one that's pre-made ($125 in parts? How do you figure? a joystick is $8, 8 buttons are $12. Throw in another $50 for wood, acrylic, hardware and an old PS2 controller and you're covered). You might have better luck trying to sell these on gaming forums, where people don't know what things cost and how easy it is to make your own.
-Ace-